| 摘要 |
PROBLEM TO BE SOLVED: To provide a cart for carrying a load such as a construction material in a building or a building under construction and capable of moving on a step, while horizontally maintaining a carrier, when a step exists in a slab. SOLUTION: This cart 1 moving on a step is provided with an axle 3 for a step capable of freely moving in the vertical direction in relation to the carrier 2 of the cart.
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